const webpack = require('webpack');
const merge = require('webpack-merge');
const UglifyJSPlugin = require('uglifyjs-webpack-plugin');
const common = require('./webpack.common.js');

module.exports = merge(common, {
  devtool: 'source-map',
  plugins: [
         // new UglifyJSPlugin()
         new UglifyJSPlugin({
           sourceMap: true
         }),
         new webpack.DefinePlugin({
           'process.env.NODE_ENV': JSON.stringify('production')
         })
   ]
});
